Live prediction market odds for Casper Ruud vs. Alexei Popyrin. Compare prices across Kalshi and Polymarket.
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Kalshi / Polymarket
2026-05-21
Casper Ruud vs. Alexei Popyrin — ATP Tennis match scheduled for 2026-05-21. Compare live prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.
Casper Ruud leads the “Casper Ruud vs. Alexei Popyrin” event at 73.5% implied probability, followed by Alexei Popyrin at 26.8%. Platforms are tightly aligned at a 1.0% spread.
Casper Ruud vs. Alexei Popyrin is a prediction market event currently tracked across 2 platforms (Kalshi, Polymarket). Casper Ruud leads at 74% implied probability, making it the market favorite. Other contenders include Alexei Popyrin at 27%.
Casper Ruud currently leads at 74% implied probability. Behind Casper Ruud, Alexei Popyrin at 27% are the next closest contenders. Platforms were tightly aligned at a 1.0% spread, suggesting broad consensus on the odds.
Here are the latest odds across Kalshi, Polymarket: Casper Ruud: 74¢ on Kalshi, 73¢ on Polymarket. Alexei Popyrin: 27¢ on Kalshi, 27¢ on Polymarket. Platforms are tightly aligned at a 1.0% spread, leaving little room for cross-platform arbitrage.
A price of 74¢ means the market estimates a 74% probability that Casper Ruud will be the outcome. Buying one share at 74¢ pays out $1.00 if correct — a 35% return — or $0 if wrong. This is the core mechanic of prediction markets: the price directly reflects the crowd's probability estimate.
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Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket.
KalshiIf Alexei Popyrin wins the Popyrin vs Ruud professional tennis match in the 2026 ATP Geneva Quarterfinal after a ball has been played, then the market resolves to Yes.
The following market refers to the Popyrin vs Ruud professional tennis match in the 2026 ATP Geneva Quarterfinal after a ball has been played. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), the market will resolve to a fair price in accordance with the rules. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks).
PolymarketThis market refers to the tennis match between Alexei Popyrin and Casper Ruud in the Geneva Open, originally scheduled for May 21, 2026 at 8:30AM ET. This market will resolve to 'Alexei Popyrin' if Alexei Popyrin advances against Casper Ruud. This market will resolve to 'Casper Ruud' if Casper Ruud advances against Alexei Popyrin. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
Casper Ruud
73.5% avg
